參數(shù)資料
型號: MC68HC05C8A
廠商: Motorola, Inc.
英文描述: Microcontrollers
中文描述: 微控制器
文件頁數(shù): 53/158頁
文件大?。?/td> 773K
代理商: MC68HC05C8A
Low-Power Modes
Stop Recovery
MC68HC05C8A
MC68HCL05C8A
MC68HSC05C8A
Rev. 5.0
Technical Data
MOTOROLA
Low-Power Modes
53
unaltered. All input/output lines remain unchanged. The processor can
be brought out of stop mode only by an external interrupt or reset.
6.4 Stop Recovery
The processor can be brought out of stop mode only by an external
interrupt or reset. See
Figure 6-2
.
6.5 Wait Mode
The WAIT instruction places the MCU in a low-power consumption
mode, but the wait mode consumes more power than the stop mode. All
CPU action is suspended, but the timer, serial communications interface
(SCI), serial peripheral interface (SPI), and the oscillator remain active.
Any interrupt or reset will cause the MCU to exit wait mode.
During wait mode, the I bit in the CCR is cleared to enable interrupts. All
other registers, memory, and input/output lines remain in their previous
state. The timer may be enabled to allow a periodic exit from wait mode.
Figure 6-2. Stop Recovery Timing Diagram
1FFE
1FFE
1FFE
1FFE
1FFF
INTERNAL ADDRESS BUS
INTERNAL CLOCK
IRQ(3)
IRQ(2)
RESET
OSC1(1)
tILCH
4064 tcyc
RESET ($1FFE, $1FFF) OR
INTERRUPT ($1FFA, $1FFB)
VECTOR FETCH
tILIH
tRL
Notes:
1.
2.
3.
Represents the internal gating of the OSC1 pin
IRQ pin edge-sensitive option
IRQ pin level and edge sensitive option
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